4,（ ）This article covers the reasons why people used to have the belief _______the world was flat
A.which B.that C.what D.whether
5,（ ）------How do you respond when _______whether your girlfriend or wife looks fat
-------never say what you think,she just wants some reassurance（肯定）from you that she isattractive.
A,asking B,to ask C,asked D,being asked